Changing Delimiter to Convert Military Time to Civilian Time

[major_maths]

I'm trying to write a program that converts military time to civilian time (24-hour to the standard 12-hour) but I'm having trouble with changing the delimiter to ":". I've tried re-working the code every way I can think of and it still won't work properly.

import java.util.Scanner;
public class Program4
{
	public static void main(String[] args)
	{
		Scanner keyboard = new Scanner(System.in);		
		keyboard.useDelimiter(":");
		String theHour, theMin;

		System.out.println("Enter time in 24-hour notation.");
		theHour=keyboard.next();
		theMin=keyboard.next();
		
		System.out.println("The time is "+theHour+":"+theMin);
	}
}

 

[preimmortal]

How are you entering the military time? Say, if it's 2 PM, are you entering 14:00 or 1400?
If you are entering it as 14:00, I would suggest using an int to store your values rather than a string,
then use nextInt instead of next.

 

[major_maths]

I'm entering it like 14:00. I tried changing the variables to integers and used nextInt, but the program waits for me to do something else after that. I tried entering 14:00 again after that just to try something and got an InputMismatchException, if that helps.

 

[preimmortal]

It looks like the delimiter is not catching the whitespace at the end of the string that you entered. You need to delimit two things: the : and the whitespace character \\s by using a regular expression.

 

[DeeNos]

Hello,

Thank you for sharing your issue with converting military time to civilian time. Changing the delimiter to ":" can be a helpful step in this process, but there may be other factors that are causing the code to not work properly.

One suggestion I have is to check the input format of the military time being entered. Make sure it follows the 24-hour notation with two digits for the hour and two digits for the minutes, separated by a colon. For example, 13:30 would represent 1:30 PM in civilian time.

Another thing to consider is the data type being used to store the time. It may be helpful to use an integer or double data type to store the hour and minute values separately, and then convert them to strings with the appropriate formatting (e.g. adding a "0" in front of single digit numbers).

I hope these suggestions help in troubleshooting your code. If you continue to experience issues, feel free to reach out for further assistance. Keep up the good work in your programming journey!